Arista Networks CAB-O-O-400G Compatible 400G OSFP 8 x 50G PAM4 IHS/Finned Top Passive Copper Twinax Cable
For equipment that specifies Arista Networks CAB-O-O-400G, this HT-manufactured DAC family offers 400G direct-attach connectivity with OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top). Rather than treating different OEM length codes as interchangeable, the available configurations below link to their own product pages. Mechanical details, installation planning and factory checks are included for engineering and purchasing review.
Series Part Number: CAB-O-O-400GHT Part Number: CAB-O-O-400G
Product Highlights
- HT-manufactured compatible alternative for Arista Networks CAB-O-O-400G
- 400G aggregate connectivity at 400Gbps
- Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
- Passive DAC / Copper
- Length configurations covered: 1m (3ft), 2m (7ft), 2.5m (8ft) and 3m (10ft)
- Conductor specification: 30AWG
- Power consumption: 0.1W Per End
Available Lengths and Corresponding Part Numbers
The documented configurations are 1m (3ft), 2m (7ft), 2.5m (8ft) and 3m (10ft). Each link below opens the separate product page for that physical length and its corresponding OEM part number. Select the exact assembly required by the route and purchase order; custom project lengths can be discussed separately.
Compatible OEM Part Numbers
- CAB-O-O-400G-1M
- CAB-O-O-400G-2M
- CAB-O-O-400G-2.5M
- CAB-O-O-400G-3M
Specifications
| Arista Networks Compatible | CAB-O-O-400G-1M |
|---|---|
| Manufacturer | HT |
| HT Part Number | CAB-O-O-400G |
| Form Factor | OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) |
| Max. Data Rate | 400Gbps |
| Media | Copper |
| Cable Type | Passive DAC |
| Minimum Bend Radius | 34.5mm |
| Max. Power Consumption | 0.1W Per End |
| Cable Length Options Covered | 1m (3ft), 2m (7ft), 2.5m (8ft) and 3m (10ft) |
| Wire AWG | 30AWG |
| Temperature Range | 0 to 70°C (32 to 158°F) |
| Jacket Material | PVC |
| Protocols | OSFP MSA, IEEE 802.3cd 100GBase-CR2, CMIS 4.0 |
| Modulation Format | 8x 50G-PAM4 |
Applications and Deployment
A passive DAC reduces the connection to one factory-terminated electrical assembly. This is useful where low latency, low interface power and a short managed route matter more than optical reach. Cable gauge, connector construction and host port settings still influence whether the complete link operates reliably. For this series, the listed interface is OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) and the aggregate rate is 400G.
Cable Construction and Routing
For this assembly, the conductor specification is 30AWG; the jacket material is PVC; the minimum bend radius is 34.5mm; the power consumption is 0.1W Per End. These parameters belong in the installation review rather than being treated as catalogue trivia. Route the cable through its intended managers without tension, avoid pressure close to the connector boots and leave enough space to operate the latches. Any service loop must respect the stated bend limit.
Procurement and Port-Mapping Review
A useful purchase order should identify the host platform, the expected OEM code and the exact cable length as separate pieces of information. This prevents a physically similar assembly from being substituted when the port identification or reach is different. For mixed-length installations, prepare one order line per part number and reconcile each delivered cable with its intended pair of ports. For this series, keep the interface rate, DAC construction and length-specific OEM reference together throughout that review.
Arista Networks Compatibility and Factory Testing
Our procurement-oriented compatibility check begins with the OEM reference and ends with a live host link. We record the physical length separately from the identification configuration, so the cable supplied for this page remains the stated version rather than a generic length substitute. Series-level inspection is followed by the exact length and OEM configuration selected for dispatch. Functional verification includes link establishment and diagnostic indications where the host exposes them.
Ordering Information
For a clear bill of materials, quote the OEM reference, HT part number, length and quantity on the same line. Add the switch or server model and software release when a pre-order review is required; project labels can repeat those details for receiving and installation teams. For this series, follow the corresponding length link, quote that exact OEM part number and keep different lengths on separate order lines. HT part number CAB-O-O-400G identifies the product family; the linked page provides the final length-specific identity.
Quality Assurance and Packaging
Before packing, the assembly is checked for connector condition, identification and link operation. Cables for multi-line orders can be labelled and grouped by part number, making it easier to match each length to the procurement record without opening every protective bag. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible cable for equipment that specifies CAB-O-O-400G, not an original Arista Networks-branded product.
Are different lengths and OEM part numbers separate products?
Yes. Where a length has its own OEM reference, follow the corresponding link above and order that exact part number on its own line. Do not substitute another length only because the connector arrangement is the same.
Does this DAC cable require separate modules at each end?
No. The connector ends and cable form one complete direct-attach assembly. The ends are not detachable standalone transceivers, and the complete product is tested together.
What information helps confirm compatibility?
Provide the equipment manufacturer and model, port type, hardware revision and software release, together with the required OEM reference, length and quantity. Breakout projects should also identify the intended lane configuration.